Toothbrush head



FIG. 1 is a perspective view as seen from the top, front and right side of a toothbrush head showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines showing a handle are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a toothbrush head, as shown and described. 